Heat-resisting filing device



July 24, 1928. 1,678,471 D. E. HUNTER HEAT RESISTING FILING DEVICE 4 Sheets-Sheet 1 7/213065: f .jymrdl? darn @1W- R w July 24, 1928. 1,678,471

D. E. HUNTER HEAT RESISTING FILING DEVICE Filed Oct. 16, 1926 4 Sheets5heet 2 July 24, 1928. 1,678,471

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D. E. HUNTER HEAT RESISTING FILING DEVICE Figd Oct. 16, 1926 4 Sheets-Sheet 4 Patented July 24, 1928.

UNITED STATES PATENT OFFICE.

DAVID E. HUNTER, OF M' USKEGON, MICHIGAN, ASSIGNOB TO SHAW-WALKER COM- PANY, OF MUSKEGON, MICHIGAN, A CORPORATION OF MICHIGAN.

HEAT-RESISTING FILING DEVICE.

Application filed October 16, 1928. Serial No. 141,921.

This invention relates to improvements in heat resisting filing devices, and more particularly to cabinets for the filing and safe keeping of correspondence, papers documents, and of a fire and heat resisting construction calculated to preserve its contents in the event of a destructive confiagration.

The object of the present invention is to meet the need for greater fire protection for written matter of not such intrinsic value as to be stored in fireproof vaults, but yet of suflicient value as to entail considerable loss and inconvenience if destroyed by fire. The purpose then is to provide an improved construction for what may be termed a fire resisting filing cabinet resembling in appearance the ordinary upright metal cabinet with sliding drawers in which the papers are filed.

While I am aware that fire resistant construction is not new in vaults, safes, and insulated cabinets, the application of the same features to a filing cabinet presents a somewhat difl'erent problem, inasmuch as each drawer of the cabinet forms a separate compartment which must be rendered effectively proof, not only against fire, water and smoke, but insulated against the transmission of heat through the walls and destroying the contents by the charring process that takes place whenever combustible material is subjected to high temperatures and without sufficient air to support combustion.

The problem, therefore, in the construction of such filing cabinets, is to insulate so far as possible, the outer exposed metallic portions from those on the interior of the cabinet, and to otherwise prevent the entry of heat by roviding a close fit between the exposed ront wall of the drawers and the frame surrounding the same when in closed position.

The structural features of a cabinet calculated to bring about these' results, are dis and the casing, as on line 33 of Figure 1, beforethe front frame is assembled.

F igures 4 and 5 are detail views "similar to Figure 3 showing the method of assembling the frame into the front of the casing.

Figure 6 is an enlarged detail view in perspective of a section of the vertical stile and frame, showing the manner of locking the frame in place after assembly.

Figure 7 is a view in cross section taken on line 77 of Figure 6.

Figure 8 is a detail view in vertical section taken on line 88 of Figure 7.

Figure 9 is a pers ective view of a section of the cabinet s owing the insulating walls after they are formed into the assembled casing.

Figure 10 is a perspective view showing a detail of the frame construction.

Figure 11 is a view in vertical section through the completed cabinet.

Figure 12 is a. view in horizontal section taken on line 1212 of Figure 11.

Figure 13 is a View in horizontal section as taken on line 13--13 of Figure 11, showing one of the drawers in place.

Figure 14 is an enlarged detail view in horizontal section throughout one of the side walls of the completed cabinet.

Figure 15 is an enlarged detail view of a portion of the drawer supporting tracking, showing the method of supporting the rear end portion thereof in the cabinet.

Figure 16 is a view in.side elevation of one of the drawers, showing the front detached and in section.

Figure 17 is a top plan view of a drawer with front detached and shown in section.

Figure 18 is an enlarged detail view in section through a corner of the drawer showing the connection between the drawer body and front; and

Figure 19 is a perspective view of the corrugated flanged member connecting the parts of the drawer together.

In general, the cabinet or filing unit consists of an outer metal shell or casing 1 surrounding and encasing a solid inner structure of a monolithic heat insulating and fire-resisting substance of a cementitious character, forming relatively thick walls on all sides of the cabinet, and also between the several drawer compartments, In addition, the exposed end or front walls of the drawers are similarly constructed so that each drawer when closed forms a separate and independent fireproof compartment. As shown, the cabinet is of the upright vertieal style consisting of several drawer compartments, although the shape and number of drawers is a matter of choice.

The outer shell or casing 1 is constructed of sheet metal of a suitable grade and gauge, the sheets for the walls being assembled and welded together along their edges by the provision of overlapping marginal flanges along the several edges to be joined. The method of forming the outer casing or shell of the cabinet, is not of great importance, since any approved construction may be adopted in which the top, bottom, rear and side walls are united into an integral member. As thus constructed, the forward edges of the top, bottom and side walls of the casing form a full sized opening at the front of the casing. Surrounding this opening are U-shaped channel strips 2 having their outer webs 2 welded in overlapping engagen'ient with the edges of the casing walls, and oined together at their mitered ends by weld ng, thus providing stiles about the openings formed by the transverse and inner Webs 2 and 2 the latter extending rearwardly and parallel with the adjacent walls of the casing.

Nithin the rectangular front opening, now slightly reduced in size b the channel strips 2, is fitted a ladder-like rame 3 which is an assembled structure of longitudinal frame members 4, end members 5 and intermediate cross members 6. These members making up the frame, are cut and formed from strips of sheet metal and joined together at corners and intersections, preferably by reinforcing angle or gusset plates spot-welded to the inside faces of the strips.

This frame 3 which will presently be described more in detail, forms the front openings of the several drawer compartments and likewise the rabbets or grooves extending around the openings to receive complementary ribs on the front wall of the drawers, so that the compartments will be sealed when the drawers are in closed position and flush with the stiles of the casing.

After the outer metal casing 1 and frame 3 are assembled, as will be more fully described, removable or collapsible forms are inserted into the casing through the rectangular openings at the front, to define the spaces or drawer compartments extending rearwardly from the openings as well as the spaces between the walls of the casing and between the forms themselves, which are to be filled'with the insulating material. Previous to the placing of the forms, however, reinforcing material, such as coarse wire mesh, is placed midway of the spaces between the out-ercasing and forms, these spaces being about one and one-half inches in width. The casing with the forms in place is then turned upside down and the insulating material is poured through an opening provided in the bottom wall, in quite the same manner as concrete is poured into a form. After the material has set, the forms are removed and the opening in the bottom wall is permanently sealed, thus completing the outer composite casing of the cabinet, it being noted that a solid reinforced structure consisting of integral top, bottom and side walls is formed, as well as transverse partition walls extending rearwardly from the cross members 6 of the frame 3 the full depth of the casing, as will be seen from Figure 9.

The drawers are of the usual sliding type, supported on tracks mounted on the sides of each compartment, with suitable extension devices to support the drawers in fully extended position. The front wall of each drawer is an insulated head consisting of a hollow sheet metal shell filled with the same plastic insulating material as used in the construction of the main cabinet. The body of the drawers is not insulated, but is formed of sheet metal to which the front is attached, as will be pointed out.

Having thus described the general construction of the cabinet, a more detailed deseription of the structural features will follow:

As already pointed out, the opening at the front of the outer shell is surrounded by the inturned U-shaped channel members 2, and within the opening formed by these channel members is fitted the frame 3. The longitudinal frame members 4 and end members 5 have the same cross sectional contour, and are secured to the adjacent channel strips in the same manner, so that the following description applies to both.

As clearly shown in Figure 6, the members 4 and 5 forming the outer portion of the frame 3, are generally S'shaped in contour, havil g a relatively square U-shaped portion 4 a ong its outer edge, forming an outwardly facing channel immediately adjacent the inner web 2 of the channel stri) 2. Just beyond the U-shaped portion e is a narrower and more rounded U-shaped portion bent in the reverse direction to the outer U-shaped portion to form a forwardly ex tending rib 4 The inner web 4 of the last mentioned U-shaped portion continues rearwardly for some distance beyond the U- shaped portion 4 and provides the inner surface of the frame.

The cross members 6 differ considerably in cross section from the longitudinal and end frame members, as shown in Figure 8. They are more symmetrical, consisting of a deep central longitudinal rib 6 with slightly beveled top and bottom walls, convergingto a square and wall e tending some distance forwardly from the body of the member. At the base of this central rib, the metal is bent at right angles in 'o posite directions, and thence forwardly again at right angles, and thence doubled back upon itself to form relatively shallow ribs 6 between which and the central rib 6 is formed upper and lower channels or rabbets 6. The outermost webs forming the ribs 6 are extended rearwardly and form the outer walls 6 of the cross members.

The cross members 6 are fashioned at their ends so as to form a mitre joint with 'the longitudinal frame members 4 extending at right angles thereto. As clearly shown in Figures 9 and 10, the rib 4 and inner web 4 of the member 4 is cut away at each intersection withthe ends of the cross members, and corresponding portions of the ribs 6'" and webs 6 of the cross members being likewise cut away so that the edges, which are chamfered, abut each other to form mitre joints 7 between the complementary ribs 6 and 6* and inner webs 4 and 6", as clearly shown in Figure 9.

The ends of the central longitudinal rib 6" of the cross members 6 are extended beyond the rib 4" of the vertical frame member 4. As shown in Figure 10, this end projection 8 of U-shape contour, extends transversely of the channel 4 at which point a notch 8* is cut at its forward edge with the portion along its rear edge cut away as at 9, to clear the outer web of said channel 4. This projecting end 8 with its notch 8 provides a locking member for securing the frame rigidly in the casing, as will now be described. I

After the frame 3 is assembled as a unit, it is inserted into the casing and brought into upright position just to the rear of the opening, as shown in Figure 4, and thence by drawing the frame forwardly into the opening formed by the channel members, the parts are assembled and locked together by the following means. At several points along the vertical inner webs 2 of the channel members 2, are formed notches 10 opening rearwardly and having the shape of the projecting ends 8 of the cross members 6, said notches being located to receive said projections. Moreover, a series of clips 11 are welded to the inner face of the webs 2 of the channel member 2, these being located at intervals about the front opening of the casing. These clips 11 are T-shaped with a shank portion 11 fixed to the channel, and a transverse head 11 which projects directly to the rear. prior to the assembly of the frame, as shown in Figure 3. Moreover, these clips are offset slightly from the face of the web 2 throughout the end portion of the shank adjacent the T-head 11", to provide a space between the marginal portion of the web and the offset portion of the shank.

Thus, as shown in Figures 4 and 5, as the frame is brought forwardly to its seat, the projections 8 of the cross members 6' enter the notches 10, and the outermost web of the channel 4" of the vertical frame members 4 of the frame interlocks with the edges of the webs 2 of the channel members 2 inside of the offset portions of the clips 11. After the frame has been seated, the ends of the T-heads 11" of the clips 11 are bent over at an angle to extend over the U-shaped portion 4 of the frame members 4, thus securing the frame against displacement in a rearward direction, (Figure The frame thus permanently located brings the notches 8 in the end portions 8 of the cross members, just inside of the channels 2 with the forward edges of the projections flush against the front transverse web 2 thereof. To further secure the frame in place, and to give added strength to the assembled structure against transverse stresses, tapered locking pins 12 are inserted into the vertical openings formed by the notches 8", these pins being inserted from above and, driven tightly down into place (Figures 6 and 7).

The casing as thus assembled with the frame in place, is now ready to receive the inner walls of insulating material. The first step in the process of insulating the casing is to apply sheets of wire mesh 13 (Figure 11) along the sides, back, top and bottom walls of the casing and spaced therefrom a distance substantially one-half the thickness of the layer of insulation. In ad dition, sheets of wire mesh are extended from front to rear to lie in the plane of the cross members 6 (Figure 9), the several sheets being tied or laced together to holdthem in place. After the wire mesh is in place, a wooden box-like form (not shown) is inserted in each of the drawer compartment openings, the outer surface of these forms defining the spaces to be filled with the solid insulating material. After the forms are placed, the casing is preferably turned upside down and the insulating material in a plastic or wet state is,

poured into the casing through an opening in the bottom wall, this opening being permanently sealed by a suitable closure plate 1% afger the pouring operation has been comete p As soon as the insulating material has set and hardened, the forms are removed thus leaving solid walls 15 of a monolithic construction surrounding the inside of the easing to a thickness of about one and one-half inches, and horizontal partition walls 16 of about the same thickness separating the drawer compartments.

In order to support the drawers within the compartments, provision is made for mounting tracks on the inner side walls of each compartment, this requiring an especial equipment since the surfaces which support the tracks are the bare walls of insulating material.

As a preferable method of accomplishing this end, pairs of vertical strips or uprights 17 and 18 are embedded in the posite side walls of insulating material an flush with the inner surfaces thereof. One pair 17 is located near the rear of the compartments and the other pair 18 near the compartment openings and adjacent the inner web 4 of the frame members 4.

These uprights are placed in position before the insulating material is oured, this being done by detachably mounting them on the forms, so that when the forms are removed the uprights remain embedded in the surface of the insulating walls.

The rear pair of uprights 17 are preferably of channel section, with the marginal flanges extending into the insulating material. Moreover, both pairs of uprightsterminate short of the top and bottom walls of the outer metallic casing so that they will be entirely insulated therefrom, and hence avoid the transmission of heat to the interior of the compartments.

At intervals along the rear pair of uprights 17 and at the level of the tracks to be supported thereby, are formed pairs of transverse slots 17. To the rear face of the uprights and extending over the slots are angle plates 17 which form cavities immediately behind the slots from which the insulating material is excluded during the pouring operation. The tracks 19 are strips of sheet metal having a track angle 19" along their top edges, on which the drawer rollers ride.

- These tracks lie .fiatwise against the side walls of the compartment and each has stamped from the material, a pair of lugs or tongues 19" oflset toward the walls of the compartments and extending toward the rear or inner end of the track. These lugs are positioned to engage the slots 17 in the rear pair of uprights 17, 17 so that the tracks can be readily applied by first inserting the lugs in the slots and then forcing them rearwardly to anchor their rear ends. The front ends of the tracks are permanently secured to the forward pair of uprights by means of screws 20, which are inserted through registering holes 20 pun-bed in the tracks and in the uprights 18. To make the connection more secure, a bar 21 is welded to the rear face of the uprights 18, and tapped to receive the screws 20.

The drawers 22 which complete thefinished device, are of sheetmetal construction,

which slide in and out of the compartment on rollers or slides engaging the tracks, al-

though in common with most filing cabinet constructions, an intermediate or extension roller slide ,23. is .employed between the drawer and the supporting tracks so that the ,ness of the casing.

- drawer can be pulled out its full length and still have bearing support on the tracks. No attempt has therefore been made to Show the details of the sliding fixtures for the drawer, it being understood that any suitable construction may be used.

In the present drawer construction, the body 22 is constructed of sheet metal as in the ordinary steel cabinet construction. The front wall or section 24, however, is of a fire resisting construction and made separately from the drawer body to which it is later joined.

As clearly shown in Figures 16, 17 and 18, the drawer front consists of two metal stampings 25 and 26. The outer stam ing 25 forms the rectangular front wall wit its margins bent at right angles, and thence inwardly and back upon itself to form a rearwardly facing bead or rib 25" extending entirely around the drawer front. Inwardly from the rib 25 extends a flange 25 havin ,overlapping engagement with a correspon ing flange of the other stamping 26, which extends rearwardly to form with said rib 25, a channel 26". This channel 26 and rib 25 are adapted to interfit with the ribs 4", 6 and channels 4, 6, respectively, of the frame members surrounding the front of each drawer opening. The stamping 26 is L-shaped in section, the longitudinal web 26 extending some distance beyond the rib 25 and thence bent inwardly at right angles to form a transverse web 26. \Vclded to the vertical transverse web 26 of the drawer front casing, is a sheet metal plate 27 (Figure 19) having an extended marginal portion bent rearwardy in U-shape with a corrugated freev edge portion 27. Welded to the forward edges of the side walls of the drawer body 22, are L-shaped angle plates 28 extending the full drawer height. These L plates have inwardly projecting flanges 28 spaced :1. short distance from the forward edges of the drawer body walls to form a vertical slot adapted to receive the corrugated flange of the U-shaped strip 27 on the drawer front. After the drawer front caslng has been assembled, it is filled with the same insulating material which "forms the inner walls of the casing, to the full thick- The finished drawer front 1s then assembled to the drawer body by forcing the corrugated web lengthwise into the slot formed by the flange 28 of the l ..-plate 28, thus forming an interlocking ]O1Ill; between the two parts. Such a joint does not provide a rigid connectionbetween the parts, but affords a yieldable connection due to distortion of the corrugations. The purpose of this type of joint is to allow for certain adjustment after the drawers have been assembled and during the final fitting of the drawers into the finished cabinet, so that if the drawer fronts do not seal tightly lli with the channels and ribs surrounding the drawer opening, the necessary adjustment can be made. It is an important feature in a fire resisting cabinet, since any openings or crevices due to improper fitting of the drawer front, will afford direct access to heat into the compartment, and hence by providing a yielding connection between the drawer body and its front, the necessary ad- 'ustment can be made after the drawers have een assembled.

A detail of the drawer construction which may be mentioned, is the handle mounting. The drawer handle 30 is preferably attached to a length of channel iron 31 embedded in the body of the insulating material, by means of bolts 32, the handle parts being assembled before the insulating material is poured. In this'way, the strain is transmitted from the handle to the entire drawer front, and not to the metal front wall.

The remainin details of the cabinet which form no part the present invention have been omitted, it being understood that the usual locking mechanisms and other refinements may be applied to cabinets of the present construction.

Having set forth the features of a fireresistin cabinet, I claim as my invention:

1. A heat resisting filing cabinet comprising an outer sheet metal casing having a front opening surrounded by a U-shaped flange, a sheet metal frame fitting into said opening in enga ement with metal clips secured to said flange and having locking heads adapted to be bent over said frame to lock the game against displacement.

2. A fire resisting filing cabinet comprising an outer metal casing having a full hei ht opening at its front surrounded by a U- aped channel member, a metal frame fitting into said opening in interlocking connection with said channel member and comprising cross members having end portions projecting beyond said frame and adapted to project through notches formed in said channel members, and means for locking said frame to said channel members and the projecting ends of said cross members against endwise movement.

3. A fire resisting filing cabinet comprising an outer metallic casing having an opening at the front thereof, surrounded by a channel-like flange adapted to fit within said opening and comprising cross members having extended end ortions projecting beyond said frame, said ange beingprovided with notches to receive said pro ecting end portions, and pins adapted to be inserted through openin s in said extended end portions and within said flange to lock said cross members against endwise displacement.

4. A construction for fire resisting filing devices comprising an outer casing of sheet metal having an open side surrounded by a rearwardly opening channel-shaped flange, a frame adapted to fit into said opening and comprising frame members forming openings for several drawer compartments, said frame having a marginal flange adapted for interlocking engagement with said channelshapcd flange, and laterally projecting beads adapted to register with inwardly opening notches formed in said flange, clips secured to said flange and adapted to be bent to lock said frame in place, and pins inserted through openings in said beads.

5. A construction for fire resisting filing devices comprising an outer sheet metal casing having a front opening, a metal frame fitting into said opening and forming a plurality of drawer compartment openings, and an inner monolithic structure of heat insulating material consisting of integral walls of substantial thickness and forming partition walls, dividing the space within said easing into a pluralit of drawer compartments, drawers slida 1y mounted in said compartment and comprising front sections of heat resisting material, tracks for said drawers mounted in each compartment, and supports for said tracks comprising vertical bars embedded in the side walls of insulating material.

6. A heat resisting filing cabinet comprising an outer sheet metal casing having an open front, a sheet metal frame fitting into said opening and consisting of frame members forming a plurality of drawer compartment openings and having a vertical contour to form grooves and rabbets surrounding each opening, an inner casing of insulating material forming integral walls having their inner surfaces flush with the openings formed by said frame members to form a plurality of drawer compartments, :1 drawer in each compartment and comprising a front section havin an outer metallic shell and an inner body of insnlating material, said shell having marginal grooves and rabhets adapted for sealing contact with said grooves and rabbets of said frame.

7. In a fire resisting filing cabinet, the combination of a casing comprising an outer metallic shell and an inner monolithic casing of insulating material forming a plurality of drawer compartments, and a drawer for each compartment comprising a sheet metal body, and a front drawer section consisting of an outer metal shell and inner body of insulating material, and means for adjustably connecting said front section to said body.

8. In a fire resisting filing cabinet, the combination of a casing comprising an outer metallic shell and an inner monolithic casing of insulating material forming a plurality 'of drawer compartments, and a drawer for each compartment comprising a sheel metal body, and a front drawer section consisting of an outer metal shell and inner body of insulating material, said drawer body and front having interlocking flanged connec tion, one of said flanges being corrugated to permit said front to be adjusted relative to said body.

9. In a fire resisting filing cabinet, the combination of an outer metallic casing, an inner casing of reinforced monolithic construction forming a plurality of drawer compartments, a drawer for each compartment, drawer supporting tracks mounted in said compartments, and means for supporting said tracks comprising vertical bars embedded in side walls of said inner casing adjacent opposite ends of said tracks, the rear bar being provided with slots adapted to receive locking lugs at the adjacent ends of said tracks.

10. A heat resisting filing cabinet comprising a metallic casing forming the outer walls of said cabinet and having one side thereof open, an inner casing of insulating material consisting of integral walls lining said metallic outer walls and extending transversely between opposite side walls in parallel spaced relation to form a lurality of drawer compartments opening rom the open side of said casing, and a drawer mounted in each of said compartments and having an insulating head adapted in the closed position of said drawer to form a heat proof closure for its compartment.

11. A heat resisting filing cabinet comrisin an outer metallic casin 0 en on one side, a monolithic inner casing of insulating material consisting of walls forming a lifting for the walls of said outer casing and partition walls dividing the space within said inner easing into separate compartments having openings through the open side of said outer casing, and drawers mounted in said compartments and having insulating heads forming a separate closure for each compartment.

12. A heat resistin filing cabinet comprising an outer metallic casing having one of its sides open, and a frame member extending across its open side to form a plurality of openings, an inner casing of insulating material consisting of walls extending throughout the inner surface of said outer casing and an integral partition wall registering at its free edge with said frame memher, the surfaces of said walls inclosing all but one side of separate compartments, and drawers mounted in said compartments each having an insulated head forming a closure for each compartment when in closed position.

13. A heat resistin filing cabinet comprising an outer meta lic casing having one side open, a metallic frame fitting into the open side of said casing and divided into a plurality of smaller openings, an inner casing of insulatin material consisting of integral lining an partition walls, the former extending throughout the inner surface of said outer casing and the latter dividing the space into a plurality of separate compartments registering with the openings in said frame, and drawers slid-ably mounted in said compartments and having insulated heads adapted to provide a heat resisting closure for each compartment when said drawers are in closed position.

14. A heat resisting filing cabinet comprising an outer metallic casing having its front side open, a plurality of frame members extending transversel of said open side and forming a plurality 0 smaller openings, a monolithic inner casing of insulating material consisting of walls lining the walls of said outer casing and partition walls extending the depth of said inner casing from said frame members, said walls dividing the space into a plurality of individual insulated compartments, and drawers mounted in said compartments and having insulated heads adapted to close the openings to each compartment when said drawers are in closed position.

15. A fire resisting filing cabinet comprising an outer metal casing open at one side, metallic frame members extending transversely of said open side and forming a plurality of o enings, said frame members having inwar ly facing channels, an inner casing of heat insulating material consisting of walls extending throughout the inner surface of said outer casing and integral partition walls dividing the space into a plurality of separate insulated compartments, the free ed es of said partition walls filling the channe s in said frame members, and drawers mounted in said compartments and having insulated heads adapted to form closures therefor when in closed position.

16. A fire resisting filing cabinet comprising a metallic casing having an opening at one side thereof, a metallic frame fitting in said opening and consisting of outer frame members and channel shaped cross members, said frame dividing the open side of said casing into a plurality of drawer compartment openings, an inner monolithic easing of insulating material consisting of walls linin the walls of said outer casing and abuttlng at their free edges with the outer frame members and partition walls forming a plurality of separate insulated compartments and having their free edges embraced bysaid channel-shaped cross members, and drawers mounted in said compartments, and having insulated heads forming separate closures for said compartments.

17. A fire resisting filing device comprising an outer casing of sheet metal having a front opening, a metallic frame fitting into said frame members, and drawers mounted in said compartments and having insulated m heads.

Signed at Muskcgon, Mich, this 11th day of October 1926.

DAVID E. HUN TIER.

DISCLAIMER l,678,471.David E. Hunter, Muskegon, Mich, Hnu-Rnsrsrmo FILING Dnvrcn. Patent dated July 24, 1928. Disclaimer filed November 26, 1934, by the patentee, and the assignee, The Shaw-Walker Company.

Hereb enters this disclaimer to that part of the claims in said specification which are in the ollowing words, to wit:

10. A heat resisting walls of said cabinet an filing cabinet comprising a metallic casing forming the outer having one side thereof open, an inner casing of insulating material consisting of integral walls lining said metallic outer walls and extending transversely between opposite side walls in parallel spaced relation to form a plurality of drawer com artments opening from the open side of said casing, and a drawer mounted in eac of said compartments and having an insulating head adapted in the closed position of said drawer to form a heat proof closure for its compartment.

"11. A heat resisting filing cabinet comprising an outer metallic casing open on one side, a monolithic inner casing of insulating material consisting of walls forming a lining for the walls of said outer casing and partition walls dividing the space within said inner easing into se arate compartments having openings through the open side of said outer casing, and

awers mounted in said compartments and having insulating heads forming a separate closure for each compartment.

12. A heat resisting filing cabinet com using an outer metallic easing having one of its sides open, and a frame member exten ding across its open side to form a plurality of openings, an mner casing of insulating material consisting of walls extending throughout the inner surface of said outer c andanin al partition wall registering at its free edge with said frame member, t e surfaces 0 said walls inclosing all but one side of separate com artments, and drawers mounted in said compartments each having an insulated sition.

14. A heat resisting filing cabinet comprising an outer metallic ead forming a closure for each compartment when in closed casing having its fmnt side open, a plurality of frame members extending transversely of said open side and forming a plurality of smaller openin a monolotbic inner casing of insulating material consisting of walls lining the w s of said outer casing and partition walls extending the depth of said inner casing from said frame members, said walls dividin the space into a plurality of individual insulated compartments, and drawers mounted in said compartments and having insulatedheads adapted to close the openings to each compartment when said drawers are in closed position.

15. A fire resisting filing cabinet comprising an outer metal casinflgggpen at one side, metallic frame members extending transversely of said open side said frame members having inwardly facing chann plurality of openi casing of heat insu ating material consisting of walls exten forming a els,.an inner throughout the inner surface of said outer casing and integral partition walls dividing the space into a plurality of separate insulated compartments, the free edges of said partition walls filling the channels in said frame members, and drawers mounted in said compartments and having insulated heads adapted to form closures therefor wheninclosed position.

[Oficial Gazette January 1, 1935.]

said frame members, and drawers mounted in said compartments and having insulated m heads.

Signed at Muskcgon, Mich, this 11th day of October 1926.

DAVID E. HUN TIER.

DISCLAIMER l,678,471.David E. Hunter, Muskegon, Mich, Hnu-Rnsrsrmo FILING Dnvrcn. Patent dated July 24, 1928. Disclaimer filed November 26, 1934, by the patentee, and the assignee, The Shaw-Walker Company.

Hereb enters this disclaimer to that part of the claims in said specification which are in the ollowing words, to wit:

10. A heat resisting walls of said cabinet an filing cabinet comprising a metallic casing forming the outer having one side thereof open, an inner casing of insulating material consisting of integral walls lining said metallic outer walls and extending transversely between opposite side walls in parallel spaced relation to form a plurality of drawer com artments opening from the open side of said casing, and a drawer mounted in eac of said compartments and having an insulating head adapted in the closed position of said drawer to form a heat proof closure for its compartment.

"11. A heat resisting filing cabinet comprising an outer metallic casing open on one side, a monolithic inner casing of insulating material consisting of walls forming a lining for the walls of said outer casing and partition walls dividing the space within said inner easing into se arate compartments having openings through the open side of said outer casing, and

awers mounted in said compartments and having insulating heads forming a separate closure for each compartment.

12. A heat resisting filing cabinet com using an outer metallic easing having one of its sides open, and a frame member exten ding across its open side to form a plurality of openings, an mner casing of insulating material consisting of walls extending throughout the inner surface of said outer c andanin al partition wall registering at its free edge with said frame member, t e surfaces 0 said walls inclosing all but one side of separate com artments, and drawers mounted in said compartments each having an insulated sition.

14. A heat resisting filing cabinet comprising an outer metallic ead forming a closure for each compartment when in closed casing having its fmnt side open, a plurality of frame members extending transversely of said open side and forming a plurality of smaller openin a monolotbic inner casing of insulating material consisting of walls lining the w s of said outer casing and partition walls extending the depth of said inner casing from said frame members, said walls dividin the space into a plurality of individual insulated compartments, and drawers mounted in said compartments and having insulatedheads adapted to close the openings to each compartment when said drawers are in closed position.

15. A fire resisting filing cabinet comprising an outer metal casinflgggpen at one side, metallic frame members extending transversely of said open side said frame members having inwardly facing chann plurality of openi casing of heat insu ating material consisting of walls exten forming a els,.an inner throughout the inner surface of said outer casing and integral partition walls dividing the space into a plurality of separate insulated compartments, the free edges of said partition walls filling the channels in said frame members, and drawers mounted in said compartments and having insulated heads adapted to form closures therefor wheninclosed position.

[Oficial Gazette January 1, 1935.] 

